Millsboro is a town in Sussex County, Delaware, home to about 7,424 people across 5.1 square miles. It has no ZIP code of its own: it’s part of 19966.
Homes sold for a median of $193 per square foot in the three months ending August 2026, a balanced market.
Part is in Millsboro, part in Long Neck
Each card is that ZIP code’s whole market, including any part outside Millsboro. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Millsboro’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Philadelphia International Airport (PHL)84 miles away |
|---|---|
| Closer regional airport | Ocean City Municipal Airport (OCE)25 miles away |
| Nearest city of 250,000+ | Baltimore, MD86 miles away |
| Nearest city of 1 million+ | Philadelphia, PA93 miles away |
Straight-line distances from the center of Millsboro; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Millsboro had 6,863 residents in the 2020 census, up 191% since 2000.
It’s the 17th largest of 79 towns in Delaware by population.
Sussex County grew from 42,276 residents in 1900 to 237,378 in 2020.
Sussex County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 29°F. About 43.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Georgetown Sussex Co Ap, DE weather station (6 miles away).
78,541 jobs at 6,411 businesses in Sussex County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
224 doctors and other health care providers list an office in Millsboro.
Nearest hospitals
Providers with an office here
| Primary care doctors | 25 |
|---|---|
| Specialist doctors | 13 |
| Dentists | 4 |
| Nurse practitioners and physician assistants | 62 |
| Mental health providers | 54 |
| Physical and occupational therapists | 62 |
| Chiropractors | 4 |
| Pharmacies | 12 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Pharmacies
Libraries
Museums
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Indian River School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| East Millsboro Elementary SchoolMillsboro | K–5 | 820 | Public | 5.4 mi |
| Long Neck Elementary SchoolMillsboro | K–5 | 712 | Public | 3.8 mi |
| Millsboro Middle SchoolMillsboro | 6–8 | 726 | Public | 5.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Long Neck.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.